NO SIGNAL
Test results
1
ELECTRICAL CONNECTIONS CHECK
All OK
Problems encountered
Operation
Check for loose electrical connections at the solenoid and at the engine management control unit.
Go to Step 2
Presence of loose electrical connections.
Restore the correct connections.
2
WIRING CONTINUITY CHECK
Check for breaks in the wiring continuity
See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT
Go to Step 3
Breaks in the wiring continuity.
Restore the correct continuity for the wiring.
3
DUCT CONDITION CHECK
Check the condition of the ducts connected to the solenoid.
Go to Step 4
Presence of faults in the solenoid ducts.
Restore correct operation.
4
SOLENOID OPERATION CHECK
Check that the solenoid is working properly.
Go to Step 5
Solenoid not working properly.
Replace the solenoid
Op. 1080E20 ENABLEMENT SOLENOID FOR FLOW OF FUEL VAPOUR TO INLET - R+R
5
ENGINE MANAGEMENT CONTROL UNIT OPERATION CHECK
Check that the engine management control unit is working properly.
End of diagnosis
Engine management control unit faulty.
Replace the engine management control unit
Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R
ABOVE THRESHOLD
WIRING INSULATION CHECK
Check the condition of the wiring insulation (short circuit to Vbatt)
Wiring insulation faulty.
Restore correct wiring insulation.
Go to Step 6
6
BELOW THRESHOLD
Check the condition of the wiring insulation (short circuit to GND).